It depends. There are riots in England currently because some racists don’t want anymore immigration. I’m pretty sure you can easily have a very heated debate with these guys. You may talk with a jew about Israel these days too.
If you avoid hit topic with the wrong person, you won’t find strong opinions. But Internet bring people together, especially when they want to fight eachother.
One exception to it : fascists managed to convince people who can only lose stuff to a war that it’s good for them too.